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Normas DIN – AENOR
DIN EN ISO 3746:2006-03

DIN EN ISO 3746:2006-03

Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO/DIS 3746:2005); German version prEN ISO 3746:2005

Acoustique - Détermination des niveaux de puissance acoustique et des niveaux d'énergie acoustique à partir de la pression acoustique - Méthode de contrôle employant une surface de mesure enveloppante au-dessus d'un plan réfléchissant (ISO/DIS 3746:2005); Version allemande prEN ISO 3746:2005

Akustik - Ermittlung der Schallleistungs- und der Schallenergiepegel von Geräuschquellen aus Schalldruckmessungen - Hüllflächenverfahren der Genauigkeitsklasse 3 über einer reflektierenden Ebene (ISO/DIS 3746:2005); Deutsche Fassung prEN ISO 3746:2005

Fecha Anulación:
2011-03 /Withdrawn
Equivalencias internacionales:

ISO/DIS 3746 (2005-11)

prEN ISO 3746 (2005-11)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 3746:2011-03

Resumen:
This International Standard specifies methods determining the sound power levels of a noise source from sound pressure levels measured on a surface enveloping a noise source (machinery or equipment) in a test environment for which requirements are given. The sound power level (or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noise source, with frequency-weighting A applied, is calculated using those measurements. The methods specified in this International Standard are suitable for all types of noise (steady, non-steady, fluctuating, isolated bursts of sound energy, etc.) defined in ISO 12001. This International Standard is applicable to all types and sizes of noise source (e. g. stationary or slowly moving plant, installation, machine, component or sub-assembly), provided the conditions for the measurements can be met. The test environments that are applicable for measurements made in accordance with this International Standard may be located indoors or outdoors, with one or more sound-reflecting planes present on or near which the noise source under test is mounted. Information is given on the uncertainty of the sound power levels and sound energy levels determined in accordance with this International Standard, for measurements made with frequency weighting A applied. The uncertainty conforms with that of the survey grade of accuracy (grade 3).
Keywords:
Absorption, Acoustic measurement, Acoustic testing, Acoustics, Calibration, Definitions, Determination, Ear protectors, Enveloping surface methods, Environment, External noise, Fixings, Hand-held, Inspection, Installations, Machine noise, Measurement, Measuring environment, Measuring instruments, Measuring surfaces, Methods, Microphones, Noise, Noise (environmental), Noise measurement, Noise reduction, Noise sources, Operation, Performance tests, Position, Precision, Reflective, Sonic testing, Sound absorption, Sound energy, Sound level, Sound power, Sound pressure, Sound pressure level, Sound sources, Specification (approval), Vibration engineering
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